Bolt-On & Security Sight Windows

Jacoby-Tarbox bolt on and security sight windows provide safe, economical tank viewing from light to severe service.  Model 5800 UniGlas® sight window plus a retaining flange combine to simply change any flange or studding outlet into an observation port.

Security Sight Window Features:

• 5005-DW features patented Factory Mutual approved Dual Window (DW) design

• Protection against stress concentration, thermal shock, corrosion, erosion, and overpressure

• Corrosion resistant linings: PTFE, PFA, and rubber
• Pressure range: Full Vacuum (FV) to 1500 psig (103 Bar)

Bolt-On UniGlas Sight Window Features:

• Strongest, safest, most impact resistant, thermal shock, and overpressure
• Pressure range: FV to 1500 psig (103 Bar)


Tel: +1 (440) 572-1500


A History of Innovation

Clark-Reliance® provides customer solutions in over 120 countries in the power generation, refining, gas processing and chemical industries. Key acquisitions over the last few decades have solidified Clark-Reliance as an industry leader in the design, manufacture and distribution of level indication & control and filtration & separation products and services.

Clark-Reliance® has a long and rich history that abounds with innovation. Consistently on the forefront of technological progress, Clark-Reliance is a multidivisional corporation that designs and produces award-winning products.

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16633 Foltz Parkway Strongsville, OH 44149